title: Inpatient costs and predictors of costs in the psychosomatic treatment of anorexia nervosa.
abstract: OBJECTIVE
  In German inpatient psychosomatics per diem lump sums will be introduced as reimbursement rates by 2013. It was the aim to calculate total inpatient costs per case for the psychosomatic treatment of patients with anorexia nervosa and to identify cost predictors.
  
  
  METHODS
  The sample comprised of 127 inpatients. Cost calculation was executed from the hospital's perspective, mainly using microcosting. Medical records provided data on patient characteristics and individual resource use. Two generalized linear models with gamma distribution and log link function were estimated to determine cost predictors by means of demographic data, comorbidities, and body-mass-index at admission.
  
  
  RESULTS
  Inpatient costs amounted to 4,647 €/6,831 US$ per case (standard deviation 3,714 €/5,460 US$).The admission BMI and "Disorders of Adult Personality and Behavior" were significant cost predictors (p < 0.05).
  
  
  CONCLUSIONS
  The formation of patient groups within the diagnosis anorexia nervosa should be oriented towards the determined cost predictors.
authors.affiliation: Department of Psychosomatic Medicine, Charité Medical School, Berlin, Germany. laura.haas@charite.de
authors.forename: Laura
authors.initials: L
authors.lastname: Haas
authors.forename: Tom
authors.initials: T
authors.lastname: Stargardt
authors.forename: Jonas
authors.initials: J
authors.lastname: Schreyoegg
authors.forename: Rico
authors.initials: R
authors.lastname: Schlösser
authors.forename: Gerhard
authors.initials: G
authors.lastname: Danzer
authors.forename: Burghard F
authors.initials: BF
authors.lastname: Klapp
mesh_terms: D000328:Adult; D000856:Anorexia Nervosa / Q000191:economics* / Q000523:psychology / Q000628:therapy; D015992:Body Mass Index; D017048:Health Care Costs; D006760:Hospitalization / Q000191:economics*; D006801:Humans; D007297:Inpatients